diff --git a/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider.go b/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider.go
index 962917cf2f6e..07bef861088d 100644
--- a/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider.go
+++ b/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider.go
@@ -71,7 +71,7 @@ func (n *nodePool) IncreaseSize(delta int) error {
 	if delta <= 0 {
 		return errors.New("size increase must be positive")
 	}
-	size, err := n.manager.GetNodeGroupSize(n)
+	size, err := n.manager.GetNodeGroupTargetSize(n)
 	if err != nil {
 		return err
 	}
diff --git a/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider_test.go b/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider_test.go
index 0086d8035ce6..3a182689a7ed 100644
--- a/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider_test.go
+++ b/cluster-autoscaler/cloudprovider/ionoscloud/ionoscloud_cloud_provider_test.go
@@ -113,18 +113,18 @@ func (s *NodeGroupTestSuite) TestIncreaseSize_InvalidDelta() {
 }
 
 func (s *NodeGroupTestSuite) TestIncreaseSize_GetSizeError() {
-	s.manager.On("GetNodeGroupSize", s.nodePool).Return(0, errors.New("error")).Once()
+	s.manager.On("GetNodeGroupTargetSize", s.nodePool).Return(0, errors.New("error")).Once()
 	s.Error(s.nodePool.IncreaseSize(2))
 }
 
 func (s *NodeGroupTestSuite) TestIncreaseSize_SetSizeError() {
-	s.manager.On("GetNodeGroupSize", s.nodePool).Return(2, nil).Once()
+	s.manager.On("GetNodeGroupTargetSize", s.nodePool).Return(2, nil).Once()
 	s.manager.On("SetNodeGroupSize", s.nodePool, 3).Return(errors.New("error")).Once()
 	s.Error(s.nodePool.IncreaseSize(1))
 }
 
 func (s *NodeGroupTestSuite) TestIncreaseSize_OK() {
-	s.manager.On("GetNodeGroupSize", s.nodePool).Return(2, nil).Once()
+	s.manager.On("GetNodeGroupTargetSize", s.nodePool).Return(2, nil).Once()
 	s.manager.On("SetNodeGroupSize", s.nodePool, 3).Return(nil).Once()
 	s.NoError(s.nodePool.IncreaseSize(1))
 }